Report of the State Geologist. 371 



l>e rendered. The material thus far examined has been found 

 very rich in trilobites, linguloids and lamellibranchs ; the lingu- 

 loids especially being remarkable for their diversity of form and 

 beauty of preservation. 



Late in the autumn of last year Mr. Jacob Van Deloo made 

 some collections of fossils from the Chazy limestone at Keese- 

 ville, and in September of this year he, with Mr. Martin Sheeny, 

 collected considerable valuable material from the interesting 

 Oriskany fauna on Becraft's Mountain, near Hudson, discovered 

 last year by Dr. C. E. Beech er of Xew Haven. 



About a year ago 1 began the preparation of a series of lists 

 of the type and illustrated specimens of fossils belonging to the 

 Museum collections. The lists heretofore published have been 

 fragmentary and scattered ; it has been my purpose to bring 

 together in a zoological arrangement an enumeration, complete 

 to date, of these important specimens, with citations to the pub- 

 lications in which they have been figured. I transmit herewith 

 the first installment of this catalogue, viz., Part I, Crustacea. 



The work done on the Palaeontology of New York, vol. VIII, 

 parts 1 and 2, is fully recounted in your own report. 

 I am, sir, very respectfully yours. 



J. M. CLARKE, 



Assistant Paleontologist. 



